11217091 has 2 divisors, whose sum is σ = 11217092. Its totient is φ = 11217090.

The previous prime is 11217061. The next prime is 11217097. The reversal of 11217091 is 19071211.

It is a strong prime.

It is an emirp because it is prime and its reverse (19071211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11217091 is a prime.

It is not a weakly prime, because it can be changed into another prime (11217097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5608545 + 5608546.

It is an arithmetic number, because the mean of its divisors is an integer number (5608546).

Almost surely, 2^11217091 is an apocalyptic number.

11217091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11217091 is an equidigital number, since it uses as much as digits as its factorization.

11217091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 22.

The square root of 11217091 is about 3349.1925892669. The cubic root of 11217091 is about 223.8515371996.

The spelling of 11217091 in words is "eleven million, two hundred seventeen thousand, ninety-one".